The Numbers
Research and calculations tell us that, once optimized, we could produce up to 3.2 W/m2 in North-Western Europe. This means that with 100 square meters you could produce up to 2800 kWh/year. To put this into perspective: a regular Dutch household uses 3500 kWh per year. One hundred square meters could provide 80% of the electricity demand! When we move closer to the equator this output increases, because solar radiation becomes higher.